Automobile-muffler.



z/gwm C. G. BOEGK. AUTOMOBILE MUFFLER.

APPLICATION FILED FEB. 2, 1911.

v 1,002,801. Patented Sept. 5,1911.

[N VEN TOR WITNESSES UNITED STATES PAETENT OFFICE.

CHARLES G. BOECK, OF JACKSON, MICHIGAN, ASSIGNOR T NOVELTY MANUFACTURING (30., OF JACKSON, MICHIGAN, A CORPORATION OF MICHIGAN.

AUTOMOBILE-MUFFLER.

ihtlizfitlfi. Specification of Letters Patent Patented Sept. 5, 1911. Application filed February. 2, 1911. Serial No. 606,232.

To all whom it may concern: end of the exhaust pipe, indicated at 2. Be it known that I, (humans G. Boson, a Upon the said end of the casing 1, I provide citixeu of the United States, residing at rigid brackets 3 through which a securing Jack on, in the county of Jackson and State bolt l is inserted to firmly clamp the end of of filichig-zn, have invented certain new and the casing around the end of the exhaust useful improvements in luitomobile-l /lufpipe. tiers, of winch the following is a specifica- Adjacent the inlet end of the casing, by tion. which term 1s meant the end clamped upon This invention relates to improvements in the exhaust pipe, I provide upon the casing mulllers for explosive engines, and has a cut-out 5, in order that gases from the enpccial reference to mulliers employed on gine or motor may be discharged without 65 motor vehicles. passing through the muffler. This cut-out The object of the invention is to provide consists of a disk or valve loosely mounted a mulller of compact form and simple conupon the end of a lever 6, which is ful struction which may be readily attached to crumed between its ends upon a bracket 7 or detached from any automobile or other secured rigidly to and projecting laterally motor vehicle and by the use of which the from the casing, and to the outer end of the noise attendant upon the exhaust of eXplolever I connect a. link or red 8 which eX- sive engines will be overcome and the back tendsup within the body of the vehicle, to pressure upon the engine reduced to a minia point where it may be conveniently opmum. eratcd by the chauffeur.

The invention also seeks to provide a con- It, will b ob rv d that the cut-out i struction Of such character that the weight mounted directly upon the casing of the of the entire muilier will be inconsiderable mutller so that no particular construction of and consequently the dead weight of the veexhaust pipe is necessary d no li hicle appreciably reduced, so that the load fitting is needed when attaching the muliier so placed, 111301) the engine Will be minimized; to any auto nobfle now in use These stated objects, and such other inci- Withi the a i g 1 I provid a serie of dental objects as will hereinafter appear, battle plates 9, which, in the construction are attained by the use of the device illusshown in Figs. 1 to l, are secured rigidly trated in the accompanying drawings, and to bars or strips 10 extending longitudinally the invention consists in certain novel fear of the casing from a point adjacent the cuttures which will be first fully described and out to the rear or discharge end thereof, as

then more particularly pointed out in the clearly shown in Fig. 1. These bars or appended claims. strips 10 are detachably secured within the In the drawings, Figure 1 is a. view of a casing by bolts or rivets 11, inserted form of mulller embodying my improve through suitable openings in the walls of nients showing the same partly in side elethe casing and the bars, as shown, and the vation and partly in longitudinal vertical baille' plates are formed with tongues 12 section; Fig. 2 isa transverse section taken which lie against the said strips or bars, on the line 2 of F g- 1; Fig. 3 is Y SI and are riveted or otherwise securely fastudinal vertical section of a portion of the tened thereto, it being understood, however, muflier taken at right angles to the plane of that the ba'llles and base bars may be cast in t e section sh n n F g. 1; g i (ice one piece. The battle plates extend from the tail perspective view of one of the birdie tongues 12 toward and slightly beyond the plates; Fig. 5 is a plan View of a ank longitudinal axis of the casing, and their showing a modified construction; Fig. (i is a side dg s diverge from the tongue, as detail. perspective view of a portion of the how n'mst clearly in l and i, the battle member constriicted from the blank plates being rolled or otherwise given an shown in Fig. arcuate form, illustrated most clearly in Thecasing 1 of my improved muiiler may The ballies are so arranged within be straight, as illustrated, or of a sinuous the casing that their concave faces will be form, and is a tube of such a diameter as presentedto the inlet end of the casing, and, will permit one end to fit closely over the consequently, th ses passing from the exhaust pipe to the mufiier will be caught by the baflie plates and given a reverse rolling action, so that their passage through the casing will be efl'ectually retarded in order that their force may be spent before they reach the discharge end of the casing. It will also he noted, upon reference to Fig. 3, that the free edges of the bafile plates extend slightly past the axial center of the tubular casing, and that the alternate battles extend inwardly from opposite sides of the casing, as a result of which arrangement the gases are not only given a reverse rolling action in their effort to escape from the mutller, but are also thrown alternately against the opposite sides of the mufiler and consequently are given a tortuous cir-' culation therethrough. As a result of this tortuous circulation and rolling motion of the exhaust gases, they will be expanded and their force spent before the rear end of the muffler casing is reached, so that their final exit Whether through the end of the tube, as in Fig. 3, or through the discharge openings-12', as in Fig. 1, is unaccompanied by any harsh sound. The side edges of the battle plates not only diverge from the base, but are also given'a curved form, so that they will fit snugly against the walls of the casing, as shown most clearly in Fig. 2, and, consequently, there is no clear passage through the tube to permit the direct escape of the exhaust gases.

It will be readily noted from the drawings, taken in connection with the foregoing description, that I have provided two mating members each consisting of a base in the form of a narrow strip or bar adapted to extend longitudinally of the casing and a plurality of bafile plates projecting from the strip or bar and given a concave-convex formation so as to arrest the escaping gases and deflect the same from side to side of the casing, and also throw them back upon themselves so as to entirely eliminate their offensive qualities. The construction of the parts is such that they may .be all made from sheet metal, and, consequently, will add no appreciable weight to the vehicle to which the device may be attached. The bases or strips 10 and the battle plates attached thereto may be removed bodily from the casing or inserted thereinto by merely sliding the same longitudinally, as will be readily understood, so that the breakage of a single baffle plate or of either base or holding bar does not entail the provision of an entirely new mufiler. Furthermore, this construction facilitates the manufacture of the device and keeps the cost at a low figure.

In Figs. 5 and 6 I have illustrated a construction which may be preferred to that previously described and illustrated in the other figures, in which I take a sheet metal blank 18 and form slits 14; therein consisting of a transverse straight portion 15 and curved portions 16 extending from the ends of the said transverse portion and converging toward the longitudinal center of the blank. The portion 17 of the blank defined by this slit is then struck up and rolled by means of suitable dies so as to be given the shape of the battle plates shown in the other figures, and the blank is then rolled upon its own longitudinal center, so as to be given a trough-like form, as shown in Fig. 6. This particular form of baffle and support produces an integral structure which may be inserted or withdrawn in the same manner as the structure shown in the other figures, and may be more rapidly and cheaply produced.

The operation of my device and the many advantages to be derived from its use are thought to be evident from the foregoing description, taken in connection with the accompanying drawings, without further detailed mention of the same.

I claim as my invention and desire to secure by Letters Patent:

1. A mufiler comprising a tube having an open end adapted to be secured on the end of an exhaust pipe, and a plurality of imperforate battle plates detachably se cured to the inner walls of the tube at diametrically opposite points of the same and alternately arranged to project beyond the longitudinal axis of the tube.

2. A mufller consisting of a tubular casing, and imperforate battle plates secured alternately at diametrically opposite points of the casing, said baflie plates having their edges fitting closely to the walls of the casing and their inner ends extending past the longitudinal center of the casing.

3. A mufller consisting of a tubular casing, and pairs of battle members detachably secured therein at diametrically opposite points thereof and each comprising a longitudinal base and arcuate bafiles carried by said base.

4. The combination with a mufiler casing,

of a series of battle plates arranged therein and having a concave-convex form, the concave faces of the battles being arranged toward the inlet end of the casing and the battles projecting alternately from the op posite sides of the casing with their free edges extending past the axial center of the casing.

5. A baffie member for use in inutllers comprising a base, and a plurality of imperforate curved bafiie plates carried by and projecting at intervals from the base and arranged transversely thereto.

6. A muffler comprising a tubular casing, a base extending longitudinally of the cusing and detachably secured therein, and a plurality of imperforate battle plates carried by said base and disposed transversely thereto.

' 7. A mu'fller consisting of an open-ended tubular casing, and mating diametrically opposite bafiie members secured therein and removable bodily endwise through the open end of the casing, each of said members consisting of a base adapted to extend longitudinally of the casing againstthe wall of the same, and a plurality of concavo-convex imperforate baflles projecting from the base,

- the height of the baflles being more than one-half the diameter of the casing and the closely against the casing.

edges of the baflles being arcuate to fit 8. A bafile member for use in mufilers comprising a base, and a plurality of imperforate curved bafl'le plates integral with the base and arranged transversely thereto.

In testimony whereof I afl'u; my signature, 20 in presence of two Witnesses;

CHARLES G. BOECK.

Witnesses:

D. R. TARBELL, G. D. HAWKINS. 

